Families looking to celebrate Earth Day can find no better setting than the Hancock Parks. On Sunday, April 21, the park district is hosting Hands On Nature: Earth Day Fun at Oakwoods Nature Preserve Discovery Center, with the aim of celebrating earth’s treasures while teaching families environmentalism in a fun setting. Starting at 1 pm, participants will play “trash toss” and create their own Earth Day hat. Then, at 2 pm, kids and their parents will embark on an “Unnatural Hike.” The day’s festivities aren’t all about the games, though — children will leave with an enhanced knowledge of eco-friendly living. 1-4pm. Free. 1400 Oakwoods Ln. 419-425-7275. hancockparks.com.